Heterogenic colonization patterns by Leptospira interrogans in Rattus norvegicus from urban slums

Brazilian Journal of Microbiology

Ana Amélia Nunes Santos¹  Cláudio Pereira Figueira¹  Mitermayer Galvão Dos Reis¹  Federico Costa¹  Paula Ristow¹ 

关键词: Leptospira interrogans;    renal colonization;    natural reservoirs;    Rattus norvegicus;   

DOI  :  10.1590/S1517-838246420140873

来源: SciELO

【 摘 要 】

Abstract We evaluated the renal colonization by Leptospira interrogans in Rattus norvegicus (rats), as it is the major natural reservoir of urban leptospirosis. We caught 72 R. norvegicus, out of which 32 were found to be positive for L. interrogans by immunofluorescence assay. From these rats, we selected 17 and divided them into six groups based on the mass-age/sex. We performed the immunohistochemistry test against L. interrogans in the kidney sections of the rats and systematically counted the colonized tubules (CTs) in 20 fields. The proportion of positive fields varied from 5% to 95%. The number of CTs in 20 fields varied from 0.5 to 85.5. These differences were not related to age or sex of the animals. The characterization of leptospiral colonization patterns in the natural reservoirs is important to better understand the host-pathogen interactions in leptospirosis.

【 授权许可】

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